diff --git a/tests/functional/Shop/CartCest.php b/tests/functional/Shop/CartCest.php
index 3a486e536..47505945c 100644
--- a/tests/functional/Shop/CartCest.php
+++ b/tests/functional/Shop/CartCest.php
@@ -19,7 +19,7 @@ class CartCest
 
     function _before(FunctionalTester $I)
     {
-        $this->country = Config::get('app.default_country') ?? 'DE';
+        $this->country = strtoupper(Config::get('app.default_country')) ?? 'DE';
 
         $this->tax1 = $I->have(TaxRate::class, [
             'country' => $this->country
diff --git a/tests/unit/Tax/Helpers/TaxCest.php b/tests/unit/Tax/Helpers/TaxCest.php
index 741fcf75c..0712352f3 100644
--- a/tests/unit/Tax/Helpers/TaxCest.php
+++ b/tests/unit/Tax/Helpers/TaxCest.php
@@ -16,10 +16,7 @@ class TaxCest
 
     public function _before(UnitTester $I)
     {
-        $country = Config::get('app.default_country');
-        if ($country === null) {
-            $country = 'DE';
-        }
+        $country = strtoupper(Config::get('app.default_country')) ?? 'DE';
 
         $tax1 = $I->have(TaxRate::class, [
             'country' => $country,